https://github.com/ycliuhw/etcd-runtime-reconfiguration-systemd-unit

service for runtime reconfiguration for existing etcd cluster
https://github.com/ycliuhw/etcd-runtime-reconfiguration-systemd-unit

Last synced: 7 months ago
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service for runtime reconfiguration for existing etcd cluster

• Host: GitHub
• URL: https://github.com/ycliuhw/etcd-runtime-reconfiguration-systemd-unit
• Owner: ycliuhw
• Created: 2018-01-07T07:24:05.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2018-01-15T04:50:31.000Z (over 8 years ago)
• Last Synced: 2025-03-12T18:44:26.915Z (over 1 year ago)
• Language: Python
• Size: 19.5 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# etcd-runtime-reconfiguration-systemd-unit

service for runtime reconfiguration for existing etcd cluster (`CoreOS`)

Prepare metadata as below for new member to boot up then join cluster

```

/ # cat /run/metadata/etcd

ETCD_ENDPOINTS=http://internal-p-etcd-EtcdElb-VK9ALY39P25I-1745127484.ap-southeast-2.elb.amazonaws.com:2379,http://internal-p-etcd-EtcdElb-VK9ALY39P25I-1745127484.ap-southeast-2.elb.amazonaws.com:4001

ETCD_NAME=10.128.4.132

ETCD_INITIAL_CLUSTER=2bd7035aa791e873=http://10.128.1.214:2380,7dc0b97b2507b31c=http://10.128.4.132:2380,a824b620ece3ec0d=http://10.128.2.161:2380

ETCD_INITIAL_CLUSTER_STATE=existing

```

```

[Unit]

Description=ETCD metadata agent

Requires=metadata.service

Requires=docker.service

After=metadata.service

After=docker.service

[Service]

Type=oneshot

EnvironmentFile=/run/metadata/ec2

ExecStartPre=-/usr/bin/docker stop etcd-runtime-reconfiguration-systemd-unit

ExecStartPre=-/usr/bin/docker rm -f etcd-runtime-reconfiguration-systemd-unit

ExecStartPre=/usr/bin/docker pull ycliuhw/etcd-runtime-reconfiguration-systemd-unit

ExecStart=/usr/bin/docker run --name=etcd-runtime-reconfiguration-systemd-unit \

    -v /run/metadata:/run/metadata \

    -v /usr/bin/etcdctl:/usr/bin/etcdctl \

    -e ETCD_DISCOVERY={{discovery_url}} \  # here is jinja2 to render

    -e ASG_NAME=${AWS_TAG_ASG_GROUPNAME} \

    -e AWS_DEFAULT_REGION=${AWS_REGION} \

    ycliuhw/etcd-runtime-reconfiguration-systemd-unit:latest

[Install]

WantedBy=multi-user.target

```